Jia Hongwei FP0, FP1 FP2, Panasonic, FP2SH, FP3, FPM, FPC, FP5, FP10, FP10S, FP10SH series solutions of some models need to disassemble the decryption password. When the device is used, it often happens that PLC is encrypted or the touch screen modification parameter is damaged, and it can not be used normally. At that time, we need to decrypt. Jia Hongwei uses the related technology to read or clear the PLC password, so as to achieve the purpose of cracking and restore the normal use of the device.